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Updated: Jun 30, 2025

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2P) +O3P) 的关联性电离

Nicholas S Shuman¹, Thomas M Miller², Shaun G Ard¹

¹Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, Albuquerque, New Mexico 87117, USA.

The Journal of chemical physics

|March 19, 2024

概括

测量了和氧原子之间的关联电离反应. 这种对大气化学至关重要的反应主要是通过关联性电离发生,产生速度常数为8 ± 5 × 10-11 cm3 s-1.

科学领域:

大气化学大气化学
化学动力学化学动力学
等离子体物理学的物理学

背景情况:

在大气和等离子环境中,N(2P) + O(3P) 反应是显著的.
之前测量N(2P) + O反应速率的结果各不相同.
了解反应机制是准确大气建模的关键.

研究的目的:

准确测量关联电离反应的速率常数N(2P) + O(3P) → NO+ + e-.
为了阐明N(2P) + O碰撞的主导反应途径.
为了比较实验发现与现有的文献价值.

主要方法:

使用流管装置与流动的余光源.
通过离子的分离性重组生成的原子 (N(2P)) .
引入氧原子并监测NO+离子的形成.

主要成果:

确定N(2P) + O(3P) → NO+ + e- 的速率常数为 (8 ± 5) × 10-11 cm3 s-1.
观察到的NO+形成仅归因于标题反应.
测量的速率常数高于之前报告的N(2P) + O. 的消失速率常数.

结论:

2P) +3P) 反应主要通过关联性电离反应进行.
原子的2D或4S状态的化是次要的反应通道.
这些发现为大气模型和等离子体化学提供了关键数据.

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